MS-SQL 2000 보안 쿼리문

설치 후 해당 쿼리를 이용해서 제거 해주세요 위부터 하시면 됩니다
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불필요한 권한 삭제

1) master database
REVOKE EXECUTE ON xp_regread FROM public
REVOKE EXECUTE ON xp_instance_regread FROM public
REVOKE EXECUTE ON dbo.sp_runwebtask FROM public

2) msdb database
REVOKE EXECUTE ON sp_add_job FROM public
REVOKE EXECUTE ON sp_add_jobstep FROM public
REVOKE EXECUTE ON sp_add_jobserver FROM public
REVOKE EXECUTE ON sp_start_job FROM public
REVOKE ALL ON dbo.mswebtasks FROM public
REVOKE EXECUTE ON sp_enum_dtspackages FROM public
REVOKE EXECUTE ON sp_get_dtspackage FROM public
REVOKE EXECUTE ON sp_get_sqlagent_properties FROM public

3) 시스템 명령이 가능한 확장 프로시저 제거 합니다
USE master
GO
IF OBJECT_ID('[dbo].[xp_cmdshell]') IS NOT NULL BEGIN
   EXEC sp_dropextendedproc 'xp_cmdshell'
END
GO
EXEC sp_addextendedproc 'xp_cmdshell', 'xplog70.dll'
GO
USE master
GO
IF OBJECT_ID('[dbo].[xp_cmdshell]') IS NOT NULL BEGIN
   EXEC sp_dropextendedproc 'xp_cmdshell'
END
GO

4) 쿼리를 이용해서 제거 하여도  dll 파일은 남아 있습니다
    아래와 같이 지워 줍니다
dbcc xp_cmdshell(free)
dbcc xp_cmdshell(free)
dbcc xp_dirtree(free)
dbcc xp_regdeletekey(free)
dbcc xp_regenumvalues(free)
dbcc xp_regread(free)
dbcc xp_regwrite(free)
dbcc sp_makewebtask(free)
dbcc sp_adduser(free)

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 mssql 인젝션방지용...
=============================================================================
use master
go
 
---- SQL 인젝션방지용 
 
DENY  EXECUTE  ON [master].[dbo].[xp_subdirs] TO [guest] CASCADE 
DENY  EXECUTE  ON [master].[dbo].[xp_dirtree] TO [guest] CASCADE
DENY  EXECUTE  ON [master].[dbo].[xp_availablemedia] TO [guest] CASCADE
 
DENY  EXECUTE  ON [master].[dbo].[xp_regwrite] TO [guest] CASCADE
DENY  EXECUTE  ON [master].[dbo].[xp_regread] TO [guest] CASCADE
DENY  EXECUTE  ON [master].[dbo].[xp_regaddmultistring] TO [guest] CASCADE
DENY  EXECUTE  ON [master].[dbo].[xp_regdeletekey] TO [guest] CASCADE
DENY  EXECUTE  ON [master].[dbo].[xp_regdeletevalue] TO [guest] CASCADE  
DENY  EXECUTE  ON [master].[dbo].[xp_regremovemultistring] TO [guest] CASCADE
DENY  EXECUTE  ON [master].[dbo].[xp_regaddmultistring] TO [guest] CASCADE
 
--일반 사용자의 물리적인 파일 접근을 차단
DENY  EXECUTE  ON [master].[dbo].[xp_fileexist] TO [guest] CASCADE
DENY  EXECUTE  ON [master].[dbo].[xp_fixeddrives] TO [guest] CASCADE
DENY  EXECUTE  ON [master].[dbo].[xp_getfiledetails] TO [guest] CASCADE
go